523252555521 has 8 divisors (see below), whose sum is σ = 699646477920. Its totient is φ = 347846835072.

The previous prime is 523252555519. The next prime is 523252555523. The reversal of 523252555521 is 125555252325.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (523252555519) and next prime (523252555523).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 523252555521 - 2¹ = 523252555519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523252555523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247049251 + ... + 247051368.

It is an arithmetic number, because the mean of its divisors is an integer number (87455809740).

Almost surely, 2^523252555521 is an apocalyptic number.

It is an amenable number.

523252555521 is a deficient number, since it is larger than the sum of its proper divisors (176393922399).

523252555521 is a wasteful number, since it uses less digits than its factorization.

523252555521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494100975.

The product of its digits is 750000, while the sum is 42.

The spelling of 523252555521 in words is "five hundred twenty-three billion, two hundred fifty-two million, five hundred fifty-five thousand, five hundred twenty-one".